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Mean percentage of correct responses and standard deviation for each category in Grade 4–6.
| Part-whole | Proportion | Number | Operations | Simplification | |
|---|---|---|---|---|---|
| Grade 4 | 65 ± 16 | 69 ± 28 | 47 ± 19 | 22 ± 18 | 26 ± 6 |
| Grade 5 | 72 ± 13 | 78 ± 26 | 52 ± 18 | 37 ± 28 | 61 ± 9 |
| Grade 6 | 77 ± 15 | 85 ± 22 | 63 ± 20 | 53 ± 27 | 71 ± 10 |
